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Merit® Series


Gas Furnace

Single-stage, 80% fuel-efficient gas furnace with variable-speed fan motor

ML180V Gas Furnace
Price Guide
Efficiency Rating (AFUE)
up to 80

Warranty on covered components is 5 years. Warranty on furnace heat exchanger is 20 years A 10-Year Extended Limited Warranty available with product registration. For more information, visit

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Illustration of Consider the bar raised.

Consider the bar raised.

Consider the bar raised.

Welcome to the Lennox® standard of excellence. Merit® Series is the introductory product line that raises the bar for heating and cooling equipment. Don’t settle when it comes to the air inside your home–ask for more. Ask for Merit.


Ask More from Your Air.

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Keep temperature swings to a minimum.

Your home will stay perfectly comfortable with steady temperatures, improved humidity control and smart energy use, thanks to a variable-speed motor.

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Save energy every month.

An energy-efficient design means this furnace keeps your home comfortable and saves on monthly utility bills. Plus, when paired with a programmable thermostat, you could save up to 35% in utility costs.

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A smarter system.

When this furnace is installed with a compatible Lennox heat pump, it creates a heating system that can switch back and forth between gas and electricity automatically, based on whichever is most cost-efficient for the weather conditions at the time.

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Ratings & Reviews

See what other customers are saying about
ML180V Gas Furnace

5 Stars 5/5

Very warm

January 04, 2024

Just had it installed and it provides heat for entire house.

Green check mark

Yes, I recommend this product.



Age: Over 65`

Gender: Male

Reason for Replacement: Planned

Warranty Satisfaction:
5 Stars 5/5
November 15, 2020

5 Stars 5/5

Works great

November 14, 2020

W have it for six months, operation smooth and quiet

Pal V

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